Anker Classic Portable Wireless

This item outclasses other wireless speakers of a similar size. The Anker Portable Wireless Bluetooth Speaker offers high-def sound, boasts the longest playing time of any compact speaker, and is in the smallest package. Unlike some of its competitors, it doesn't just unleash sound, but clear, full-bodied sound. It gives you the volume and clarity of a boombox, but without the bulk.

PRODUCT FEATURES:

15-20 hours of play time

built-in rechargeable 2100mAh Lithium ion battery

when turned on, automatically connects to the last connected device, enabling one-step music streaming

POSITIVES:

The Anker Portable Wireless Bluetooth Speaker is a great little item for the price. Powered by a 4-watt, 2-inch driver, it delivers sound that is surprisingly clear and loud  and it's packed into a three-inch cube that fits in the palm of your hand, ready to travel in its own carrying case. Best of all, it offers 20 hours of playing time, so you can jam all day and still listen to your nighttime soundtrack without having to recharge it. The 33-foot range is three feet longer than the standard one, so you can listen to music while gardening or in the pool. The volume doesn't distort, even when turned all the way up.It even doubles as a speaker phone with a 2-inch microphone so you can make or receive calls in the middle of a song.
It's so easy to use, a six-year old can do it. Just slide the switch to the on position, it automatically connects to the last-connected device, and you're ready to start streaming. Rubber feet on the bottom keep it in its place, so it doesn't jump around like some other speakers. When the Bluetooth is disconnected, it turns off automatically.

NEGATIVES:

The Anker Portable Wireless Bluetooth Speaker is not so great for listening to an audio book  it's not loud enough to hear the words clearly. This speaker connects to various devices like an Android phone, laptop, and tablet, but only one at a time. You can't use the speaker while it's charging, or it will damage the circuits. When it powers up or the charge is low, it makes annoying noises which cannot be controlled. It's not weatherproof, so one must be careful when using it outdoors.
If you are looking to buy a wireless Bluetooth speaker, you probably want to see what options are available to you. If you want to see some other models, check out the Oontz Angle ultra-portable wireless Bluetooth speaker and possibly the DKnight Magicbox Ultra-Portable Wireless Bluetooth Speaker. Both very popular options.